Had good run with 172 on way home today both 1 up in cars on Millbrook flyover both slowed for speed camera at 50 side by side soon as i was clear floored it in 3 was supprised to see that my car actually pulled on the 172. Pulled up at lights further down road guy in 172 commented nice williams. Lights green left him behind again dont know why i was interested in buying one now williams forever