U2FanPeter
Rock n' Roll Doggie Band-aid
Is that what the deal is for U2? No idea. Maybe they all have separate cars because they're total assholes and/or hate each other. But it's not that far-fetched an idea.
It is weird that they fly in the same plane but don't travel in the same car. Police/Stones/Bruce & ESB principle members have been seen travelling in the same vehicle in/out of shows
The bodyguards around the band members seem to be for similar reasons rather Bono having personal security concerns. I saw Bono's guard(John?) get very uppity when a fan gave Bono a sizable gift covered in wrapping paper. Also keep in mind it was rumoured that Bono was actually kidnapped(!!) near the end of the ZOOTV tour, plus all his political stuff.