Pros
Get to make input into new prototypes and be on the cutting edge of new technology. Get to choose your shift and drive to areas in the state you may never have ventured. Improve on your driving skills and learn evasive maneuvers to avoid accidents. Learn to test, keen your eyes and ears to how the car is behaving and sometimes put that to work on your own car. You decide how much of a raise you earn by improving on your driving skills and writing good reports on the test vehicles. Getting time off is never a hassle. Just give them a week and it's good to go. Full benefits. If you show them you want to work you'll never have a problem.
Cons
Management can use some work and new driver orientation could improve greatly. Get better field trainers to show drivers how the job is done instead of where the best places to eat are at. PTO can only be used once you reach 9 months. But it accrues from the time you start. Full benefit pkg can be expensive if you have dependents ($400+/mo).