"ManhattanMan" wrote in message
...
john bates wrote:
"Jim Logajan" wrote in message
.. .
Here's a neat video someone took of a Blue Angel low pass (~25 ft?)
over San Fransisco bay during Fleet Week this year and the visible
shock cone seems to indicate it was traveling just under mach one:

http://jumpcut.com/view?id=C009AF727...89000423CF037A

Great.
How about a car going faster to break the sound barrier?

How about a giant hammer to smash a car breaking the SOUND barrier??

That's daft - at least a car has broken the sound barrier.