That's much less than an hour's play -- does it show your results from the N'th game of N?
I played once and got the same deltas as you (0.02 and 0%) but times consistently somewhat worse than yours. The approach I used was to ignore the phone except for the interval between reacting to each gate's sign and passing through it.
(Why anyone in their right mind would be texting while driving, I don't know.)
(my results: http://img339.imageshack.us/img339/787/picture1krx.png)