Car Food Warmer How Can I Keep Food Hot/warm While Driving In My Car? ?

How can I keep food hot/warm while driving in my car? ? - car food warmer

I cook dinner, my mother's house and car, but I do not know "want to be cool when I arrived. The unit is 30 minutes. And I do not want to heat after his arrival there. I want them to be able to eat as quickly as emptying the trash. How can I warm and hot?