If you find yourself at Britain’s Silverstone Circuit on Saturday, September 15th, you’ll likely be in for quite an event. Ferrari North Europe is attempting to break the Guinness World Record for the Largest Parade of Ferrari cars, and so far over 600 have registered for the event.

Ferrari North Europe set a then-world-record of 385 cars on the Silverstone Circuit during the Ferrari Racing Days 2007, but that number has since been surpassed by the 490 Ferraris that descended on Fuji Speedway in 2008.

Over 600 cars have signed up for this year’s Silverstone event in the first month of registration, but Ferrari North Europe’s goal is to round that up to an even 1,000 cars participating. In other words, nearly 400 slots are still available for interested Ferrari owners.

In case you need more more incentive than driving your Ferrari around Silverstone with 999 of your closest friends, here it is: Ferrari will donate £5 (roughly $7.83) for each car participating to BEN, an automotive industry charitable organization.

The Guinness World Record attempt will be held during this year’s Ferrari Racing Days event at Silverstone, which will also feature the running of the FXX and 599XX development racers, as well as a selection of vintage F1 cars participating in Ferrari’s Corse Clienti program.

And here’s a gentle reminder to participants: if you’re driving there in a group, let’s be careful on public roads.