problem with car lot

[aoun]

ever since i used the unlocker for nfs carbon and bought 2 hemi cudas, the cudas dissappeared but they are still taking space in my car lot.
before i had a max of 6 cars, but nows only 4 cars r in my car lot.

Is there anyway i could delete the 2 cuda's i bought and get the car lot space back?
thanks