HVAC if you live in Dallas (great for the summer) as well as being an auto mechanic. You will make more money being in HVAC.
ANY 'Skilled Trade' is good to have in this economy. <br />
Auto Maintanence is hard dirty work (I was married to a mechanic for 18 years).<br />
HVAC is hard as well, but not as greasy..<br />
You also have positions as Pipe Fitters (Grandpa) and Electriticians (Pops) to consider.<br />
The only drawback with HVAC is being on freaking Call!! People won't stand for the Heat and AC being out... Usually car maintenance isn't considered an 'emergency'.
Both!! Being an Apprentice to learn either trade is the best route to take. There is more hands on and you get paid to do it!! Take heed.
I would say auto mechanics, You would definitely be busier.
I always wanted a mechanic in the family
auto mechanics ,,, always,,there will be cars to fix