Actually they can because they are not happening at the exact same time. For example, when there is drifting happening at the track from 11:40 to 11:55 the Timeattack cars are lining up for the competition (lähdönjärjestelyyn). And when the drifting cars are coming off track the Timeattack will start. This way the whole day is running smoothly and no time is wasted.
Mika Salo, one of our greatest F1 drivers, is test driving visitors cars on Ahvenisto and giving impressions on them. We currently have an open registration going on where people can propose their cars to be driven by a professional driver. We will then draw 10 cars from those which will be given to Mika Salo for a test drive. (this is based of a finnish tv-series "Virittäjät" (rough translation "Tuners") where Salo drives two custom made cars and compares them against each other. You can watch these episodes from katsomo.fi in finnish after few commercials (Supra vs. Nissan Crew
http://katsomo.fi/?progId=76641)
