If they have a sleeper berth, yes - one for the driver compartment, and one for the sleeper berth.
No, every semi truck does not have a plug in heater.
A row of semi trucks. There isn't a specific name for it.
You can go to commercialtrucktrader.com to get a quote for your used semi trucks.
There are several companies that sell use semi trucks directly or privately-such as Eddie Stobart who regularly sell their old used semi trucks as they purchase new ones.
Most semi commercial trucks or delivery trucks can be 50 ft long.
estimated:8-9 million trucks
There are many companies that write insurance for semi trucks. Some of these companies are Progressive Commercial and Geico.
They can be either.
They can be either