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A comment on Flying car completes test flight between airports. Parent comment

Re:Flying car completes test flight between airports by rasz on Wednesday June 30, 2021 @10:48AM (#27689211)
Something tells me modern BMW engine will be more efficient than 80 year old design powering that Cessna.
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Re:Flying car completes test flight between airports by afgasgbui on Wednesday June 30, 2021 @11:16AM (#27689570)
The world records for efficiency are here:

https://www.fai.org/records?f%5B0%5D=field_type_of_record%3A...

The world record for the 1000-1750kg weight class is about 16 miles per gallon. That is burning jet fuel rather than ordinary gasoline. 1000 kg is light for a modern car.

There are no aircraft that can compete with a Prius for transporting small numbers of people. There are few that can compete with a Hummer.

(Note that I'm not sure how the records are calculated. There are a lot of relevant variables, most importantly how fast the plane is flying. And I'm not an aeronautical engineer, just a hobbyist.)

EDIT: More information on that record can be found here: https://lift.erau.edu/for-the-record/

I get a slightly different figure of 17-ish mpg. Still pretty bad.

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