Right, I'll start with these...
We have 21 characters (Including Metal Sonic) playable in the original
Now if all 21 of those characters were to return this time around, that would mean we would only be seeing 6 new characters
Barking up the wrong tree. Just because a character appeared in ASR, don't take it for granted that they'll appear in this one

How long have you guys been working on the game? The new engine looks insanely good, must've taken some time!
Oh... Good question. New engine is imaginatively named Sumo Engine, but we use the Starlight editor to build everything, so generally we refer to it as Starlight. You'll remember we used Sunshine last time, so I guess it's an upgrade! We've been working on this for about a year and a half, switching to the new engine 6 months in. Caused us a few headaches, but the results are there on the screen

Wait till you see a level with fully dynamic lights...
will there be the chance to tackle the entire track as one vehicle only? like if i wanted to stay in car form for the entire race? or will there be parts of the tracks that force you to change to another vehicle? thinking of the route RC Revenge tookwhere you had transformation gates if you wanted to take the water route etc.
We can play with when the transforms happen, so it's possible to lock tracks into given states. We choose when you transform though, to ensure there is no gamebreaking cheating going off with folk choosing to fly where they want...

Do characters that appeared in the previous game count as being scene? Because I'd like to know if you hand selected a few fan favorites and tossed the rest.
Though if not, can you comment on how these stars will work in the game?
Again, see point one for the characters.
The All-Star isn't fully locked down, but you can earn it through driving skill, picking up the All-Star coins and through other means.., Wait and see

Just a small one, if it's possible to comment on. In the article it says:
"For lone players, there's an extensive Story mode with 16 new tracks spread across a number of different SEGA worlds, represented here by floating islands."
Are the 16 tracks mentioned here exclusive to story mode, in ADDITION to the other tracks for the general modes, or is that simply phrased oddly and referring to the fact that there are 16 new tracks (plus the 4 returning ones)?
Can't go into modes right now, but it's 16 + 4. All I can say on the tracks is they're all unique, not three variations of Seaside Hill since you all grumbled so much about it

Well... since we can ask about things already revealed my only question is how the All-star gauge works with those star pick-ups. I can see the transformations are automatic, wich is a good thing. I could see some shortcuts when you could only use one vehicle, but one time or another youre probably gonna be forced to change.
As above, All-Star gauge is a mix of skill and the pickups and... nah... you'll have to wait and see. We do intend for it to be balanced, for example right now you can earn it quicker at the back of the pack...
another question is... are we seeing 16 completely different tracks (barring the 4 returning) from different levels, not from different parts of the SAME level?
and will the 4 returning courses from ASR1 be given a make over to incorporate the new gameplay mechanics of vehicle transformation etc.?
As above, all the levels are unique. Can't talk too much about the classic tracks, but the new handling has meant some changes need to be made.
Oh darn, I was going to ask if the Sonic tracks were a bit more varied, being that almost every track in ASR was from Sonic Heroes (minus Death Egg). Anyway I'm glad to see that this is coming along nicely. Hope everything turns out well for you guys =D
Yep - loads more variety, and we've been looking outside of Heroes too

Why is Sonic in a car?
*Car transforms into boat*
Sonic: Problem? 
Yep. Sonic can't swim, and with what we've got going off with water, we didn't want him to wind up drowing. He also can't fly - not without being Super Sonic of course... Plus it's the rules of the race, everyone races in a vehicle. End of the day, it's all about fun - let's not take things too seriously!
Don't mind me if I requote this, but I thought of my question. If there's a PC version will it have online play? The ASR on PC not having online when many PC games always have online play was an absolute turn off.
There is a PC version in the works, and given all the complaints about lack of online last time...
I quickly glaced at that and saw these numbers 1 9 7... for a moment I thought he'd confirmed 1970's trousers mode...
Can we have 1970's trousers mode?
Can you transform anywhere? Or is it locked to specific portions of the track?
And can we please have custom soundtracks on the PS3 version this time?
No 1970's trousers, sorry. I suggested it to SOJ, and they questioned my sanity. You have to pass through a transform gate to transform, which is our way of controlling it (otherwise everytime you drive off the edge of a track you'd expect to fly...). We might allow you to pick which gate to drive through of course...
And that's the first batch.
Again... Please don't post huges lists of characters, it makes finding questions quite hard...!
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