A crime has been committed, but the police don't know what the crime is or who did it. There are three suspects (Al, Ben, and Cal), all with disreputable reputations.

Each of the suspects make one true and two false statements.

Al's statements:
1. I stole a car.
2. Ben is innocent.
3. Cal is a disreputable person.

Ben's statements:
1. I robbed a service station.
2. I stole a car.
3. Al is guilty.

Cal's statements:
1. I robbed a service station.
2. Ben's first statement is false.
3. Al is innocent.

From the above statements, determine what the crime was and who did it?