http://www.tenton.org/misc/nanaca-crash_v106.swfok only controls are mouse click. Click (and hold) to get the angle then reales when the power is right. if your going up and are still on screen you can use a teliport crash to get you crashing down. The opposite is also done.
Look out for special crashes and the girl with glasses (she's evil. she makes you stop)
my current best is 2499.82m