Yeah, I don't think they were supposed to crash, I think the plan was for bad guy to take control, drive somewhere else, H gets out, collected by gang and taken to a plane. He had a phone conversation using Kev's phone (am I the only person who would be no good using someone else's phone because I don't know any phone numbers by heart?) saying to make sure the plane was ready.
Then he took a detour courtesy of Kev's truck to Corrie to just bump off his nemesis, a middle aged woman and teenage boy!