bandung is a nice city, not as crowded as jakarta as well.
if you're not use to the driving in indonesia, i think its better to take a train. there's few classes of train - just go for the executive.
trust me the traffic can be very frustrating - and this comes from an indonesian
as for the people there, one thing for sure be nice. you might hear a lot of conflicting news but as long as you're nice to the locals, i'm sure you'll do fine - they're helful
have fun in Bandung!