Depends... high humidity, not so much cooling from the wind, although still better than being stationary in same weather. With cars, most ones in these parts come standard with air conditioning, unless you're driving something old.
Bicycle commutes are mostly shorter than 5km, in which case a
holder and a
heavy-duty umbrella could do the trick.
No need to move 1,500kg of metal just to carry, on average, 120kg of human.