HAHAHAHA I WIN
First run that I didn't overfill, I got that score. How? Easy. I only used my thumbs.
Xbox 360 controller for the win.
(You can balance both cars between the two lanes and hit nearly all the blocks this way. You still have to dodge some whites to avoid overfills but it is way more accurate than trying to use the keyboard.)
Brilliant concept, Lu Tze. I look forward to more of your modified ash's.
EDIT: I reran and got seeing red on Elite.