I just hotbox because I don't really have an alternative. The car is about the only safe place that I have to smoke. I've also smoked out a miata and its the craziest thing ever. There was so much smoke that I could barely see my buddy. Coolest place I ever hotboxed was my friend's tiny closet. We barely fit three people in there and I couldnt even sit up. It was more like a box in the wall than a closet now that I think about it.