I agree totally, i started dating someone and then immediately wen long distance with it and it crashed and burned even after nursing it through a summer together. What i realized when i actually got to spend significant amounts of time with her was that i liked her better when i was 1000 miles away, not the nicest…

The Red Army in WW2 used them for reconnaissance and raids in subzero weather, when it was impossible for the Germans to get a tank engine started without lighting a fire under them and hoping they'd start before the Kossacks attacked.