There also was a warm-up loop called `` Zielschleife '' ( `` Finish Loop '' ) or `` Betonschleife '' ( `` Concrete Loop '' ) , around the pit area .
There also was a 2.281 km warm-up loop called `` Zielschleife '' ( `` Finish Loop '' ) or better known as `` Betonschleife '' , around the pit area .