It will get easier, over time as the market for it increases. It's good BMW is offering the 335d with the sport M package. That will help sales for that vehicle.

Audi is also making a big diesel push, as is mercedes. Diesel hybrids will soon be on the market, and stations will see it makes sense to carry at least 1 or 2 pumps.

It's probably a very large investment, and times are tough. I imagine individual stations probably have to replace storage tanks, unless there's some way to clean a gasoline tank so that it can handle diesel. Not sure on that one, but I do believe clean diesel is going to play a part in propelling our vehicles for many years to come.

It's not as if Semi-trucks are going to be battery powered anytime soon. Although, they very well may be fuel cell powered.

There are some utterly incredible fuel cells coming onto the market that produce hydrogen on-demand, only, thus completely erasing the risk of explosion. The caveat is that they require natural gas to power the fuel cell, which of course is, well, explosive, but it's less dangerous than hydrogen and the technology to safely store NG has been around for decades.

So, who knows. But, it's going to be decades before Diesel goes anywhere IMHO.