I did a couple of quick searches, but didn't find any mention of this on here.
Just thought I'd fill everyone in on an interesting device, the Burton Stove-to-Go, aka Lunchbox. It has a limited range of heat, but looks like it might fill some needs that have been addressed in this forum in the past. I know some have been looking for something that will heat their food without being a safety hazard (thus eliminating the dashboard hibachi!)
Apparently many truckers use this little device (found on etrucker.com). This was probably the safest-looking method I came across.
A quick Google search will give several representations:
If this has been mentioned before, my apologies for being redundant and redundant.