This is the exit gate at Oliver Tambo International airport in Johannesburg’s parking garage. I am sure my American readers will appreciate the spiked barrier and the ‘wait for the green robot’ instruction. (Don’t expect a green robot cross in front of the car. ‘Wait for the green robot’ is South African for ‘Wait for the green traffic light’. And I love those mean spikes that will puncture your car’s tires if you do not comply .. as if the boom is not enough!).