Anyone recommend a Portable Food Warmer that plugs into the cigarette lighter in the car?

[wellSmart]

Just want something to heat food when out for the day, soups, curry, that sort of thing.
Just re-heating not cooking from scratch.
Any suggestions appreciated.

I can't recall the specific model to recommend but last Xmas I bought my DP an electric lunchbox. Because he works on the road, this lets him set his food to warm a few hours before lunchtime. Most/many of them can plug into the car charger port.

Amazon.co.uk : electric lunch heating box

Thanks @2PintsOfCidernaBagofCrisps some interesting options there