What helped me to choose a Tacoma is the 6 foot, "plastic" bed that won't rust or dent. 

In these cases pex or some similiar plastic piping is generally used. 

@Garrett Ziehlsdorf No, the ones that I was talking about are the plastic ones that snap on over the top. 

That's also very useful info about the rodents--one more reason to take preventative measures.I was thinking of it from the perspective of how materials break down (especially with heat/cold cycles)--typically, rubber and plastic type materials break down faster in a car's engine bay than the metal materials, for instance...which makes me think pex would break down (become brittle) faster than copper....but, I'm no engineer, so who knows...

They can keep doors closed, or crack windows, or intentionally take plastic off windows, or intentionally cause the heat to turn off before the authorities show up to take measurements.

If it is just a cracked piece of plastic, that might be something they need to live with.

ALL plastic with proper slope will give you more trouble free use. 

Originally posted by Caitlyn Coyle:Folks, the entire reason that FICO scores were mandated by Fannie/Freddie was to remove underwriter bias from approval decisions.That same type of "bias removal" is why we have kids being suspended from school for drawing pictures of knives or even worse because they bring a plastic knife to school to spread peanut butter.The FICO model was no longer a reliable predictor of risk once there was widespread success at gaming the system.

The regs (plastic sheeting, negative air, double bagging debris) make the work a bit more costly but it’s pretty standard at this point I think I have been paying RRPs for 8 years now....

They crank up their plastic for all these seminars, find themselves more in debt, no discretionary income left(after all the seminars)for investments, and need the cash flow to survive.