I found the following in today's newsletter of the Annals of Improbable Research ( www.improbable.com ).
Only every 16 years?
Phew!
"The Expected Frequency of Collisions of Small Meteorites with Cars and Aircraft," A. Poveda, Planetary and Space Science, vol.
47, no. 5, May 11th, 1999, pp. 715-9. <http://tinyurl.com/c8t7dg> (Thanks to Rocio Ortiz-Espitia for bringing this to our
attention.) The authors, at Ciudad Universitaria, México, report:
"The expected frequency of collisions of a car with a meteorite larger than 10 cm in diameter turns out to be one impact every 16 years."
Only every 16 years?
Phew!