Several people probably raise their eyebrows when they see the starting list for Wednesday's rally sprint in Linköping.

In the passenger seat in one of the cars is Björn Gustafsson, who competes together with 18-year-old cross kart driver Patrik Hallberg who doubles and drives both rally and cross kart.

- I have read the map for many, many years, says Björn Gustafsson.

- We were a lot on holidays when I was a child where I was also a map reader.

I have read a lot of maps since an early age.

The Swedish Championship week is broadcast on SVT - see the times here.

See the interview with Björn Gustafsson in the player above.