When I worked on the local rag I got called out to loads of accidents, one particular curvey road in Hutton near Shenfield there was a massive old oak tree right on a bend, it had NO bark left on the road side and has several little neat round holes in the bare trunk caused by the crank pulley boss on quite a few cars, indeed big trees DO NOT back down in a one to one and the only crumple zone is half an inch of bark......don’t do it!