John and Paul are best friends. On July 1 Paul owned a 2009 Kia Rio vehicle. Paul decided to purchase a brand new 2023 Tesla. On July 3 Paul tells John that since John has been such a good friend to Paul, that Paul is going to give to John the Kia Rio when Paul purchases the new 2023 Tesla. John agrees. On July 10 Paul purchased the new 2023 Tesla, but instead of giving the 2009 Kia Rio to John, Paul gives the car to his new girlfriend Tina. When John finds out he is furious! John tells Paul that Paul has breached their contractual agreement when Paul gave the car to his girlfriend instead of giving the car to John as initially agreed. John threatens to sue Paul.

1. Name the contractual concept that is implicated by the above scenario.

2. Define and or explain the contractual concept identified

3. Who would win the lawsuit.