One factor is European cars and vans are getting uglier due to EU pedestrian safety legislation. The law says there has to be a certain distance between the hood and the engine, this acts as a pedestrian crumple zone. So vehicles are getting bulbous hoods. They're also trying to stand out from the competition and push their brand image so their designs are getting more "unique." Also the manufacturers have to make their new cars / vans look new, so the older cars look out dated (planned obsolescence), so they sell more cars. And customers don't mind if they're different / ugly, it's more important that they're seen with a new car / van.