Well first car I fancy having a drive of is a Focus ST and/or ST220. So i'll be going to Jennings. Do they have a strict test drive policy or are fairly relaxed?
I'm a good customer of Jennings (bought 2 cars from them and have had several test drives, though none unattended

, AFAIK, Middlesbrough and Stockton jennings do not have any ST220's in, i was looking 3 weeks ago for one, they offered to bring me a Titanium X 155 down from Newcastle (closest to the ST TDCi, but apparently, newer ST220's are rare as rocking horse poo atm for Jennings. I got a test drive of the managers fully loaded mondeo Titanium X (new model) though, it was really nice, had every conceivable option on it lol.
When i bought my last mondeo, i booked my test drive and got a good half hour in it, route was up the A66 to Greystones roundabout, up through Eston and Normanby, then up Flatts lane towards Nunthorpe, along the A172 to Poole hospital then down Marton road back towards the garage.
Also, when i was looking for my new car a couple of weeks ago, i went to Toyota on the fly and tested a Avensis D4-D 180bhp version, got half hour in that too but again with a salesperson, i did not like it for the record, just process of elimination.
When i test drove the car i eventually bough, i only needed 5 minutes, infact, it was sold to me before i even drove it, i sat inside it on the forecourt and knew i would buy it. I then realised how much of a bargain i had got after coming home and researching on the internet and adding up all the extras i had got.