Score is at 120,000,000 and I haven't even touched it in a half hour.
Once you reach a certain point, you don't have to hold down the right-arrow. The speed is so fast, that the blocks begin to just blink in and out of existence along a single row. It's impossible to die, even if you aren't moving at all.
Edit: Oops, looks like I was wrong. Just checked back and somehow I've died. Final score 190,030,140. Oh well.