Might not be odd for him. He seems to have a job where he gets out of work kind of late. IIFC Sloot was waiting on Deepak to get out of work for a ride to C&C's.
Lots of people have jobs where they get out late and they do their 'chores' after work or before going to bed so that when they do go to sleep they can sleep in a bit.
Some things can't be done late night/early morning but some things like washing a car, can.
" Some things can't be done late night/early morning but some things like washing a car, can."
You're right. Alot of people do things in the middle of the night, due to their work schedule. However, in this case, the person who washed their car, did so after Natalee was known to be in his car. Since this person also was involved in a cover-up of lies concerning Natalee, his actions are open to speculation, imo. The car washing could have been totally innocent.
For whatever reason, Deepak agreed to LIE about dropping Natalee off at the HI. Lied before she was considered to be missing, which obviously has created the questions about his activities.