Simplify the following text for a Grade 3 native English-speaking person.
Original: The Saab 9-3 ( not to be confused with the earlier Saab 93 ) is a compact executive car produced by the automaker Saab in TrollhÃ ttan , Sweden from 1998 .
Simplified: The Saab 9-3 is a car produced by Saab since 1998 .