ACB

Air conditioning can only work
In a closed system - buses do not count
Unless, of course, the driver is a jerk
And doesn't stop on anyone's account.
But if the bus, as usual, rolls on
Stopping each block or so to gape its doors,
Heat passing in as passengers are gone
There are no earthly scientific lores
Can make it cool. I must perforce admit
A metal box so full of sweaty limbs
Would be a sauna without A/C's bit
Of help, but I profess that small help dims
Beside the outer heat it cannot stop
A/C on buses just feels like a flop.