There's demand but for all but the most specialized stuff (maybe NVH), the work is brutal and the flag hour system sucks ass. Got a warranty job? Better be happy with half pay. Got something that's an absolute bitch to get apart or something goes wrong? Yeah you're still getting paid the same even if it's not your fault. There's a good reason Ford can't find enough auto techs. There's no way I would go back to earning money as a mechanic over something like HVAC or being a millwright.