I bought a second BMW M1 for today´s competition because the first one is in use in career.
When finishing the competition, the motor didn´t upgrade as usual but stayed flat at level 1.
Is this because:
a) it is the second car
b) the first car already is fully upgraded
c) this is a bug
d) the first car is currently in use
e) a secondary car will never upgrade.
Thank you!