User blog comment:Legionwrex/How did Saren reach the Citadel?/@comment-1440333-20130507094740/@comment-1440333-20130507180326

I doubt they still had a working vehicle considering the system shows evidence of being attacked by Reapers, not too mention they were in hibernation for several centuries - without maintenance even the best vehicles would be scrap after a fraction of that time.