I've 'played' mobile for a long time. The higher bands are much easier to 'do', mainly because the antennas aren't quite so tall. That bug catcher type antenna is a very good HF mobile antenna but it's tall. You can shorten it to some extent depending on the band of interest though. I've seen them on semi-trucks and they were not really taller than the trailer. That shortening does have a consequence though, it's narrower banded. Still works fine but you have to do some tuning of it to get it far from it's 'designed' frequency.
And then there are the remotely adjustable HF antennas called 'screwdriver' antennas cuz they use a cordless screw driver motor and a remote control. They are expensive.
Best advice I can think of is to listen to several of the ham bands, see if there's any particular ones that appeal to you. That's not so easy, how do do any listening, right?
I think ham radio is fun. Some people don't think so, and that's okay too.
Have fun...
- 'Doc