Electric water pumps (with no mechanical thermostat) are common on race
cars, but they are a complete replacement for the mechanical pump.  With
both types of water pumps installed, coolant flow would be blocked unless
both were running.

Mike Snow

>
> Would it be correct to suggest that there should be a thermostatically
> controlled electric water pump installed in the line to alleviate the slow
> traffic overheatings?