Tinman- man that's sunshine in a can.
i started fashioning sockets to gallon house paint cans for stands to test & the clear 250w bulb i got yesterday local to avoid damaged shipped goods, is ng. Tomorrow.
I'm gonna aim it & old red infrared 250w side by side at my overhead garage door which is thicker then car metal.
Will use thermal cam after i shut lights off to see heat.
Doing it just for fun, if i was in need of heat that'll last, i wouldn't chose bulbs. Short term on the cheap, sure.