-> Try another scenario...  (touch wood)

-> Drive 60 mph and run into a young tree, one that
-> will snap or bend completely over, but still
-> deploy the air bags.  Speed will be recorded
-> at virtually 60 mph.

-> Drive 60 mph and run into a million ton
-> bridge abutment.  The stop will be instantaneous,
-> and the speed will be recorded as zero mph.

-> Info in these cases is pure garbage, of no
-> interest or value.

-> I *think* what they're doing in the tattletale
-> systems is streaming data; recording
-> several seconds of first in/first out
-> information.  That *would* be of value
-> in reconstructing the event.

 Well the OBDII system does havew a FIFO buffer. Don't recal lthe exact
size but it is enough to reconstruct trhe engine/Vehicle speed for the
Air Bag deployment. Which would include the going from 60 to 0 speed in
milliseconds. 
 And incidently the system was NOT designed to be Uses in Accident5
cases. It lacks a great deal for that. It was Designed for System
Trouble Shooting. Rembember in the old day the Mechanics would ask,
"What were you doing or what was happening when the problem started."
Well NOW they can call it up on the Computer Screen.
And it was a Mandidated part of the Air Polution Control System.

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