Don't know about Bill and his 959. As for the importing company, that's a whole different thing. I'm talking about importing your own personal vehicle that you bought for use while overseas (hence the "you have to have put 2000 miles on it out of the country requirement). The rules haven't changed, I looked at them last year when I was thinking about importing a Holden SS UTE (a modern El Camino type vehicle) that I was going to bring back and swap sides using the parts from a junkyard GTO.
The Holden SS Ute is a neat car, as is the Commodore HSV6. If those regs are true, that's promising.
However, from a practical perspective, what that ends up meaning if you want to bring over one of the European diesels is:
1) You have to take enough time off to go to another country and purchase, register, insure, and drive a car for 2,000 miles over there
2) You then have to ship it overseas
3) Once you get it through customs, you then have the only model of a particular car which means that
a) You have to create your own parts network
b) All the unique parts will have to be special-ordered and shipped through this network
Anyway, some friends of mine tried this about 15 years ago with a Mercedes, and found out that it simply wasn't going to work. They'd lived in Poland and owned this car for about a year and a number of miles. It was going to need a number of changes to bring it to the US. Maybe they were doing something wrong, but their story is what I've heard most frequently.