Jason makes a small smirk as he senses that xey've gotten in trouble before for not following the quote. The kid seems ballsy. He's well familiar with that attitude.

"Not full time," Jason replies, casually. "But I've done a lot of one-off jobs for a long time. Ever since I was a kid."

It isn't exactly a lie. Jason started getting familiar with car parts when he was a kid thanks to his biological father being a car thief. Then Jason had to start stealing car parts to survive. And then there's all the training he's gone through a vigilante. Knowing how to do things like drive motorcycles and hotwire cars is very useful for the job.