OOC: Okay, here's how this tailing is going to work. You'll have to make three drive checks, each of which will be opposed by a notice check by Friedrich's driver. If you succeed at two or more, he won't notice you're tailing him. If you get a critical success on any of the three checks, you automatically pass all three. Use any dice roller you want, just provided you can link to the results. I prefer invisible castle, but it's up to you.