i agree with the above, driver education is the key. I wouldn't bank too much on the research regarding crash tests in 4×4's. Having been to too many crashes to remember in my 12 year career here and in the UK, the 4×4 occupants mostly come out with the least injuries, there have been exceptions where the 4×4 rolls but thats is luckily rare. The crash testing is always done in test conditions with the vehicle being struck from precise angles, unfortunately accidents don't happen like that. So in my opinion the newer 4×4's are safer, just not for the other road users! as for environmental issues have you seen that the worst pollutants are livestock!!! we might be going off the issue a bit here! we need to employ the same driving rules as the UK, compulsory insurance (this would restrict the 15-17 yr olds being able to drive twin turbos), higher age limit to driving i would agree with 18 yrs and a 2 tier licence system. Learner and full, get rid of restricted. I would also have a 2 part test for passing your test, one on the normal roads in normal conditions and then on the back roads and motorway. 👿