Is my commute long enough?

[crs82]

I just sold my '83 300d without ever driving the car on the road. I am now looking for a car that needs no major work to drive daily. I have my eye on the 1987 300d in the classifieds here but this is the problem: My commute is only 1.5 miles!
Now I know this isn't much of a problem (especially in Atlanta), but I'm not sure a diesel can get up to operating temps to be very efficient in 1.5 miles. I won't be driving it to work only. I'm often out and about during the day, but mostly I'll be driving to work. I'm on the road about 3 min. before I get there.
Any comments or observations? Should I just get an efficient gasser?