I see some people say that the console version of the Mako driving is not so fun. I have the PC version myself so I can only say that they're not so bad. After I watched Yathzee's review one more time before getting the game I really dreaded getting to the vehicle parts but it's not that bad. It takes a little getting used to, the Mako does feel very light as someone already said, but, if you find yourself rotating uncontrollably in mid air or going in a completely different direction than the one you want to go because you hit a small bump, all you have to do is take your finger off the accelerate button and it stops.
As far as the boring parts go, this usually happens when you're in a wide, flat field but it doesn't usually take too long until a giant Thresher Maw bursts out of the ground trying to gobble you up. Admittedly, I didn't explore the planets much besides going for what's already marked on your map. There was only one time I got really frustrated but that was because I just couldn't find a debris field no matter what route I took.