[Brian Cameron]

1. darn good question, guessing it is the airflow past the side of the car creating a vacuum (venturi effect) that pulls air toward the car across the perpendicular; vacuum has less effect (drag) on hand when hand is parallel to ground.

2. venturi effect of wider left fender tends to pull car to the left (sort of like a vertical wing)?

3. Assuming you're at sea level, ambient pressure approx = 14.7 psi + 30ps measured = 44.7 psi total. The actual answer depends on ambient air pressure where you're measuring, reductio ad absurdem, if you're in a zero air presure environment (eg space) the tire pressure as measured would actually be 30psi. Leaving aside partial pressure due to volatile hydrocarbons etc in the tire "stink" as noted by Island.

4. Tobra's right, coolant system is pressurized therefore water remains in liquid phase at higher temperatures.

5. 65,838.43 lbs, give or take, assuming dry air at 25C, 100Kpa, and disregarding the volume of the stainless steel tubes that look like little "orbit rings" outside the globe part of the sphere.