By small bump I meant the type you get when people use the ole "park by touch" method. But yeah you're right, a 4WD "truck" with a bull bar will do more damage despite the towbar.
You Aussies can count yourselves lucky that your Government clamped down on the importation of 2nd hand imported cars years ago. In NZ its a major business and the roads are clogged with worn out Japanese Used Cars (JUC). Amazingly enough alot of these cars will have got fairly low mileages but then again one of the first things a car importer learns is how to pull apart a odo and apply some creativity (to authenticate the reading of course). You can walk onto "Honest John's Car sale yard" and find lots of JUC's of varying brands and models and year. They all have one thing in common though - they're all around the same mileage.
Second hand imported 4WD's are proving very popular especially diesel turbos. These things smoke their way around town and along the highways but thats a democratic system for ya. The more expensive new Rangies and Land Cruisers (whales) are more popular with the Mums who send their kids to private schools. You see some pretty skillful examples of off road driving from these Mums as they manouvre their vehicles up onto the footpath to park. Personally I think the Dad's have pulled a fast one on Mum in convincing her that the 4WD "truck" is a practical vehicle. It certainly is more macho than an MPV which would be safer, more economical, more practical and just as capable of mounting the kerb but then again, you can't stop people buying what they want to buy. Who knows maybe Dad does use the diesel turbo "truck" to tow the boat in the weekend.
The JUC market has lead to a general price drop in all cars (even new). While in Australia cars like the WRX and Mitsi EVO are the preserve of reasonably wealthy people, here in NZ they are the boy-racer weapon of choice. Along with the obligatory jerk-off valve, 17" wheels and stereo that literally makes the earth shake. Don't get me wrong, I've nothing against boy-racers (I was one myself in the early 80's) it's the image they bring upon themselves I don't like. At least they show an interest in their cars, it's more than an appliance.