Plastic bumpr unsafe 
2007 Nissan Quest Minivan 3.5 SL 4dr Minivan (3.5L 6cyl 5A)
Rear bumper is plastic and is unsafe
 Someone rear-ended me and I got a horrible whiplash and the rear was bent badly at 30 mph.  Turns out that the rear bumper is made of PLASTIC, not a steel bumper like the Toyota Sienna.  Also, the headrests are ergonomically wrong because they are too far back so it does NOT protect you from a whiplash.  The Nissan Quest also rides too low to the ground so it tends to scrape things and the long wheelbase got me scraping the pavement which took out a baseball size hole in my the van's body.  The wheelbase is too long so turning radius is huge so you can't make a U-turn and parking is difficult because it always require backing up and forth.