Mogas and Peltier effect

I'm building an RV, and am considering using mogas, or at least having the
option of using it. Problem is that mogas has a higher vapor pressure (among
other anomalies), and this in turn can cause vapor lock. Routing of the fuel
lines is quite important, as well as the proper cooling of the gascolator
and insulating the firewall forward lines.

Even with all the above, risk of vapor lock still exists, especially when
the bird has been heat soaking on a ramp during a flying intermission.

Anyone ever consider the use of a Peltier effect device (like the ones used
in those solid state coolers, or CPU coolers) to cool down the fuel as it
passes through the cockpit (lowest ambient temperature... lower than FWF
anyway).

Haven't done the BTU math yet and was wondering if anybody else is going
through this same exercise.

This device could be used when the risk of vapor locking is high (high
altitude, temperature etc.)

Comments?