Well, judging by the hardware on the phone, a 3D game is very possible. We should really wait until Google has the ability to really revise the OS to speed up the phone, leaving resources for more things like games
They've got speedboat racing, aerial dog-fighting, and FPS 3D games coming too - they've got videos on their youtube if you wanna check it out. Thunder doesn't work on Droid ATM but I'd assume that would be fixed. Hopefully.
Raging thunder looks like a great game that I'd like to play. However, when I had a look at the description of it in the market, it said that the current version does not support the Droid. = ( I'm looking forward to an update that fix that.