Simplify the following text for a Grade 7 native English-speaking person.
Original: Estoril was then considered an unsafe and outdated track , and the last Portuguese Grand Prix was in Estoril on 22 September 1996 , with Jacques Villeneuve as the winner .
Simplified: But Estoril was considered an unsafe and outdated track . The last Portuguese Grand Prix was in Estoril on 22 September 1996 .