Hi,
I'm an IT Architect for IBM. Which is a fancy name for somone that designs systems/applications/networks or anything technical.
Work in financial Services industry, so lots of regulation whicch can be a bind.
IT is a lot harder than it used to be. Pace of change and too much Bullshi*t in the industry. Not as enjoyable as it used to be and a lot more competitive, especially in the large corporate and Public Services sectors. Also continual training and lifelong learning if you want to keep up with the pace of change.
I would agree that seperating what you enjoy ( e,g cars) from a career is wise. I only tinker with cars as it's a form of escapism from the daily grind. In fact I "treated" myself to mine last year when I completed a part time degree that sucked spare time like it was going out of fashion. Personally wouldn't recommend doing part-time degree with three kids and full-time job, so early education is a winner.
As others have stated law is a good choice, but caveat that with my expertise as a career guidance counsellor being on a par as my knowledge of partical physics.
Cheers
Lee