They were driving south on the highway
Their business was in another town
Bigger than the town they were driving from
Business took place during office hours in both towns
This drive was considered business
The feeling of passing other cars was also considered business
A feeling of business being done
The feeling of drifting slowly through a field of moving vehicles
This was the real speed...the speed of business
Not the numbers on the speedometer
One of them was playing with the radio
Slowly changing the channel from one station to another
Sometimes listening to both channels at once
On one channel a man was talking to another man on the telephone.

The other channel was playing oldies:

“Gone for Good”
“Listening Wind”
“Puzzle Power”
“Beechwood Serenade”
“Sunshine and Sugar”
“Golden Windows”
“Taste of Believing”
“Carnival Girl”
“Love Walks Away”
“Wishing Well”
“Knew You Could”
“A Face Like That”
“Dark Highway”
“Shakin’ Venus”
“Colored Wheels”
“Visit Me Quick”
“Lonesome Money”
“School of Heartache”
“Painted Smiles”

The sound of business being done.
[ Lyrics from: http://www.lyricsfreak.com/d/david+byrne/the+sound+of+business_20271086.html ]