What did help overtaking?

[Mekola]

On many races (Monaco, Barcelona) we saw the cars are so difficult to overtake, due to "track conditions". But I thought the conditions what made difficult the overtake are also on the cars. Perhaps there are constructed now in form they made the overtake more difficult than before. Because that I want know what forces made the overtake difficult between cars, and what its possible made for make the overtake more easy.

[Marshal]

Mekola, I guess we're talking about F3000 particularly here, so overtaking is always going to be hard as;

1. The drivers are all very good.
2. The cars are all the same, so no-one has a performance advantage
3. The cars rely on wings for grip so if they follow closely behind the car in front, the turbulence from that car means the wings are less effective.
4. Monaco is a special case where it virtually impossible to overtake in anything