Flying is thought of as being costly energy wise, but this is not necessarily the case. A large part of the energy cost of driving is the friction of tyres on the road. Once a modern 'slippery' plane takes off, it can be very efficient. The kit plane I wanted to build, and still hanker after, is the Europa, which will do 50mpg at 150mph and that's in a straight line! Makes you think.
Here is a pic of this cute little plane, also with removeable wings so you can load it on a trailer and take it
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