appears quite clear:

>Subaru driver (operator) is at fault for operating the car in a manner which beheld the outcome:

the driver's action(s) moved the car over the road (whatever driving conditions happened to be present); the car did not move itself thus be the root cause to the accident, the weather itself did not move the car and be the root cause the accident (these are examples of 'contributing factors' to the accident along with with poor judgement, inadequate skill level, inadequate knowledge, etc.); the driver s/b licensed- which indicates a minimum vehicle operating skill level and knowledge level (applicable laws/ etc. in the driving test) to operate a vehicle;

...even though no report/ ticket/violation was issued by a law enforcement offical to the driver at the scene, this in itself does not absolutely indicate a final determination as to 'responsibility' (broadly defined)- - perhaps there was just not enough evidence at the scene to make a determine if any law was broken....

hopefully the auto dealership w/ have insurance to make themselves whole- - after all they own the car while its on the lot

best regards
-fad