[Christ]

Look into the light range of LED's... you're trying to get something from nothing.

I, however, understand the idea of relocating the radiators. MR-2's and Fieros could easily use a smaller radiator and keep the same engine temps (mostly b/c of the utilized area of the radiator itself) because of the length of the coolant hoses. Easily enough, you could actually just add bands of aluminum foil to the radiator lines, and they've just become mild heat sinks, which bleed off heat from the coolant as it passes through.

In theory, you could just run a single large line that would allow enough flow over/around fins placed on it anywhere under the vehicle to allow for cooling of the engine coolant. Ideally, that line would be the same size as the rubber lines you currently have, allow for unrestricted flow of coolant (saving pumping losses at the engine), and be made of a non-reactive, heat conductive material (like ceramic (not good), or aluminum (good, but soft).

Said pipe would, of itself, be a heatsink, but could also benefit more from added surface area by heatsink application.

Oil can be cooled with simple pipes being added through the oil pan's sump cavity, while crappy airflow under the vehicle removes the heat from the open area inside the pipe.

Automatic transmissions could benefit from the same idea as the engine oil.

Why won't OEM's do this?
1. Cost prohibitive
2. Too far from the accepted "norm".
3. Engineers don't get paid to think.
4. It might help a situation that they're all trying to pretend does not actually exist.
5. They have the added burden of making sure they've taken into account ALL possibilities... and normally fail horribly at that for at least the first 3 years of production, then change the design on the 4th year, making themselves look bad after finally getting something right.

Take your pick... you'd be OK to try it yourself, but as far as mass-implementation, it would simply cost more than anyone would get back from it initially, and that's IF you could sell the idea at all, due to lack of consumer-based image involved with it. (read: number 2)