Marty first goes back to 1955. He crashes in Mr. Peabody's barn. As he skids out of the farm, the time is night/almost dawn. Mr. Peabody's farm is the Twin Pines Mall in the future. Marty must live within a mile or so, as he had skateboarded to the location(1985). Just after the "Peabody shooting", Marty comes up to his future neighborhood "Lyon estates" and it is broad daylight. Just how slow did he drive to make a mile stretch of road and the time elapse of 4-5 hours?