Rappers and the royal family have a lot in common: they like gaudy things, they seem to have a lot of money but no one really knows how much, and if they fear for their lives so they drive around with lots of security and bulletproof vehicles. Prince William and Kate Middleton are pretty important people, and they just had a very important child, so they are wise to take precautions. Cruising around in a bulletproof Bentley Flying Spur is a good place to start.
Security is important when you're an heir to the throne, but so is style, and the Flying Spur has a lot of that (check out the gallery we posted). According to Marie Claire, they also have WiFi and a champagne cooler inside the ride. We're surprised the windows aren't completely tinted, but then again hiding Kate's face would be a shame.