HUNTINGTON, W.Va. (WSAZ) - Heat is one of the leading causes of vehicle breakdowns during the summer months. Hot weather doesn’t just make for uncomfortable conditions. Safety officials said extreme heat can be just as dangerous as winter weather when it comes to driving. Lori Weaver Hawkins, public affairs manager with AAA Bluegrass, said emergency roadside service teams are responding to increased calls for dead batteries, engine trouble and overheated vehicles.