[zephjc]

Even something easy like articulated fire trucks would be an improvement: http://1.bp.blogspot.com/-a2g94xSRqSo/T7RXxkqARAI/AAAAAAAAJ1...

Maybe a bit narrower/shorter though.

You still get the volume but don't have to punish the people who live in an area for the 0.001% of the time fire trucks need to be there.