I know Kim is a big fan of a car share scheme in Birmingham, and I think I've mentioned on here that I use Greenwheels in .NL on the few occasions I have to get stuff from IKEA big stuff that I can't fit on the Brompton.
I discovered that Cargoroo have started doing e-cargo bikes in the Amsterdam area. For now it's only in an affluent area in the south of the city, but it's within cycling distance, so I can ride over on the Brompton, stick it in the box, and go do my errands. It's €4.20 an hour. I've just got through the verification process. I'm hoping to give it a go for some errands next weekend. I'll let you know how it gets on.
J