This poster in the city of Meunster’s (in northern Germany, near the Dutch border) Planning Office shows the amount of space taken up by cars, a bus, and bicycles used to transport the same number of people.
A couple comments:
– The photo of the cars has unfortunately been cropped, distorting the perspective somewhat and also not showing all of the cars.
– By American standards the cars in the photo are tiny. The largest auto I can discern here is a mid-sized Mercedes sedan of 1980’s vintage.
– In real use the cars would probably have to be spread out much more than the bicycles. Of course the single bus would remain a single unit. The same is essentially true when parking is considered.
From Core77, website for industrial design