A digger, a horse, a motorbike, a roman chariot or a cow are all preferable alternatives to cyclists on road, for the simple fact that, with all other means of transport, you get a lot more leeway if something goes awry for whatever reason (e.g. a pothole).

With a bike in front of you, you are always 0.8 seconds away from committing a murder.

Again, I'm 100% in favour of totally abolishing cars in every city, I look forward to that actually. But having bikes and cars together is a glaring design failure and, quite honestly, nothing more than pure insanity.