All on-road electric vehicles should have liquid cooling. Heat kills electronics; for every 10 degrees C temperature rise, electronics life is reduced by half. Air cooling just doesn't cut it. You'll have a much more reliable controller with liquid cooling.
The liquid cooling unit of the Company referenced looks like an impressive system. $450 for the complete system seems on the high side. Their location across the Bay in San Leandro could be the same outfit that produced the PFC battery charger 10-15 years ago that was an utter failure.
I build my own liquid cooling for my own controllers. Using basic components, the temperature rise of the coolant is 10 degrees F over ambient after a hard drive. The system uses a very quiet fuel pump at the bottom of an atmospheric resevoir made from ABS drainage pipe circulating a 50/50 mix of green coolant through 3/8 inch coolant hose through the controller and heat exchanger. Never needed a fan on the heat exchanger. Cost for all the components is under $100. Works great.
