Saw a nice car and almost crashed

Hmm.

Was going to pick my sister up from her horse riding lesson, and was approaching a T-junction, I was going to be turning right. Approaching the corner, not yet stopped, I saw a nice car coming round from the right, a Lexus IS-F, they're quite rare and I'd never seen one before, and after it had gone past me I looked at it in my rear-view mirror. It then suddenly occurred to me that I was still moving along, towards the car in front that had stopped... quickly looked back at the road and slammed on my brakes, the engine stalled because I didn't dump the clutch, and managed to stop, without going into the car in front.

Note to self; make sure you've actually stopped before looking at a nice car coming the other way.