Diesel engines why not more available in smaller vehicles ?

Back on the topic of diesels in smaller vehicles. The warranty on my 328d is finally up and I decided to celebrate with remap tune and a new downpipe. Should bring the 2.0L diesel to about 220hp/370lb-ft at the wheels(roughly 250hp/425lb-ft at the crank), but I will do a few dyno runs to make sure. That is a **** ton of torque in a compact car that weighs less than 3,500 lbs.

Oh darn, I guess I won't be legal in California anymore. Good thing I never plan on going there.