The main 2013 Dakar Rally Bike contenders finished Stage 4 a few moments ago . Spanish Joan Barreda Bort (Husqvarna) – leader of general classification (GC) after stage 2 – (which he lost yesterday in stage 3 because he was only 44th and lost 33 minutes) registered an impressive performance in the hardest stage of Dakar’s week 1. He won easily leaving the…