Quote:
Originally Posted by sgtlethargic
Safety is a big concern. The centered seat is a part of that. I'm uncomfortable sitting right next to the door in my normal car. I want some wiggle room, if hit on the driver's door.
I'm also thinking I will include tubular structure in the body. Imagine the curved line of the aerodynamic streamlining template as a roll bar.
I've been looking at the mpg calculator. To reach 100 mpg at 60 mph the drag coefficient, frontal area, and weight will need to be minimized.
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Starting with a classic bug chassis gives you the ability to skirt emissions regulations if it is early enough ('74 and earlier in my neck of the woods). Using a trike configuration allows you to register a custom design as a motorcycle in most jurisdictions.
Fiberglass over foam is easy to do at home with patience. It also provides significant strength and impact absorbing properties ( think surfboards and skis) requiring minimal steel/aluminum under-structure. Unless you really do want the extra NASCAR roll-cage.