Balto, the lines on the Insight are pretty good as-is. I don't know how effective a Kammback would be.
Only a handful of production cars have ever had a drag coefficient lower than the Gen-1 Insight:
0.25 Honda Insight 1999-2006
0.2455 Tatra 77 1933
0.24 Mercedes-Benz S-Class 2014–Present
0.24 Mercedes-Benz C-Class 2014–Present
0.24 Tesla Model S 2012
0.22 Mercedes-Benz CLA Blue Efficiency Edition 2013-Present
0.212 Tatra T77A 1935
0.195 General Motors EV1 1996
0.189 Volkswagen XL1 2013
I might do a grill block and some under-body panels on Turtle, but mostly I'm trying to improve my driving techniques
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