... or tree branch, or piece of roof, or garage door, or tin shed, or whatever else is loose and aerodynamic enough to get whipped up, which can be quite a lot when a strong hurricane hits a built-up area.
If you have the misfortune to be caught out under those circumstances, I suppose it's better that the 2x4 hits you in the car than hits you in the head, though.
All bets are off if the hurricane emits a tornado as they sometimes do.
All of the above might be happening in heavy rain and-or at night.
Getting back to the topic of ordinary pbuttenger-type vehicles, a lot depends on their profile. A crosswind, especially a fickle gusty one, of 60-70 mph is a real handful for a full-size van (and can be nervous-making high-workload driving for an SUV -- I've experienced it in both).
At some point as the wind increases you realize that you have to show it the pointy end (a relative term with vans) or it'll get stood on its ear. Sedan-type cars and pickup trucks (unless they have a sizeable camper shell) are less problematic.
Note also that what it can withstand outright without tipping over, and what it can withstand and remain reasonably controllable at a given speed, are two different questions.
As you fight a strong crosswind component with a big high-profile vehicle, you also notice that the gas gauge is going to E in a handcart, which can limit your evacuation prospects.
--Joe
