WebGL in 36.0b: This is a "yes and no":
Yes, Alex, you fixed the sieve-leak and the car in the HelloRacer demo renders correctly without a perpetual data load.
No, the screen updates are very sparce (several seconds apart) rather than smooth motion, so it's still not fully functional.
For comparison, tried the DavidWalsh demos (or the ones that work with my video card, heh) and only Blossom acted the way it's supposed to, and even then it was a bit skittish and dropped frames.
FYI my processor is 2.8ghz and under 35.0.1 the HelloRacer demo was smooth (I never tried the DavidWalsh ones at that time).