I love me some digital carnage.
Starting off with a few complaints:
1) This game is too easy. The first stage is fine, but once you learn the tricks and master steering, this game is a breeze. Learning curve is too short. Powerups don't help much, either - I had about 110 seconds of spare time, fully repaired car, and a shitload of nitro when I finished stage 4.
2) This game is too random. I get it, programming a good randomization is difficult, but still, I remember having a downpour of powerups, one every two screens or so, and then nothing at all for about a minute, no powerups, not even cars, in the same stage. I'd like the action to be a bit more levelled.
3) Artifacts make no sense. I mean, so do powerups, of course, but powerups are a staple of arcade racing. Artifacts, however, don't make sense just appearing randomly on the road, but what they resemble... a golden car battery? A smiling jack-o-lantern badge called "the Kind Monster"? Really?
4) "Secret" stage is a bit broken. Although it suggests to be endless, it really ends with credits @ 32k yds. I suspect copy/paste.
But all those are really minor and dim in the light of the one and only thing why I LOVE this game: it's fucking beautiful.
I don't know how you make such beautiful sprites, and I don't care, just keep making them just as beautiful. The carnage deserves to be in Burnout series, really. And although it's really obvious that this game is really 2D, it could easily stand up to 3D graphics. After all, it's not about dimensions, but about how good the image is. There's slick controls, too, and it's just long enough.
Good job overall. I think I'll play more of what you make. I just can't get enough of that beautiful car wrecks.