After you order a new car from Ling, she'll send you the finance paperwork.

Ling always includes a bright envelope, so you can send the signed documents back to her.

She stamps the envelope with first class stamps to cover the postage, but it's really worth going to a post office and sending them back with Special Delivery.

The British post office are a bit useless, like me, so Special Delivery means the envelope is guaranteed to arrive with Ling the very next day.