flaming truck guy

In several news stories about the guy who drove the

flaming truck around Dallas yesterday, they mentioned

something that I just can’t make heads nor tails of.

For instance, in this morning’s Washington Post, they

reported the following:

Police followed the

flaming 18-wheeler, loaded with lumber, a forklift,

plastic piping and at least one bucket full of nails,

for about an hour and a half yesterday as it careered

across highway interchanges, jumped median strips and

dodged police bullets, while the driver, an unidentified

man wanted in connection with a robbery, waved,

high-fived and honked at a growing crowd just outside

downtown Dallas — some of whom waved back.

High-fived? High fived? The guy was driving a

flaming semi and was able to high-five members of a

crowd watching? How does that work? I didn’t actually

get to see any of the action live, but this statement

creates a really bizarre mental picture for me. Can

someone please tell me, can you high-five without making

contact with the other person? Isn’t that just waving,

which is already mentioned in the article?