So, regardless of how many cyclists can fit in the space of a car or pass during the phase of a traffic light, the mere fact that a bicycle can't travel at the same speed is seen to make it inferior. Fair enough.
But there are infrastructure modifications, small ones, that even the gas-guzzlingest, most horsepowered, all weathered traction, multi-climate zoned, moon-sun-and-star roofed, xenon death-of-a-star headlighted, mook of all time can appreciate.
I'm talking of course about back-in/reverse angle parking. On many streets the status quo is diagonal parking in which you park nose to the curb and back out, Staubach style, with a hail Mary. This sucks for three reasons:
1. You always scrape your cowling on the curbBack-in/reverse angle parking is a genius solution. Instead of nosing right in like a hummingbird, the direction of the parking spaces is reversed and you back in. Now you don't scrape your chin all over the curb, it's easy to load up all your shoppings, and you can enter traffic much more easily.
2. You have to walk in to traffic to put your shopping bags in the trunk
3. It's easy to hit cyclists while backing out blindly
It's a super quick, super cheap, super fast fix remaining unimplemented by virtue of it's own obviousness--"there must be a good reason we're not doing it." It's like the metric system or green, pictogram exit signs.

Courtesy of the Austin Bicycle Master Plan.