Cooking and keeping food warm while traveling?
Because electric vehicles don't rely on combustion to create energy, there is no waste heat generated that can be diverted to the passenger compartment.
I've never driven a modern electric vehicle (although I did help build one that took first place in the 1995 World Solar-Car Rally and 4th in the 1995 GM Sunrayce), but my understanding is that they use electric heating, which will decrease your maximum distance.
In addition, battery packs can be discharged deeper when warmed, and so you'll lose range from that, as well.  Consumer Reports recommends pre-heating your vehicle while it's still plugged into wall power if your vehicle can do that.
I would instead recommend looking at other questions about keping food warm while traveling:

How can I keep hot food hot when transporting it?
Low tech strategies for keeping food warm
How to keep fried fish warm and crispy during transport to venue?
How to keep my pizza hot and crispy during transport