Silly Tums down

The Avis car rental site has the most dismal search I've seen on a big corporate site -- It seems to expect a booking time, without giving any option to enter -- I then figured maybe if I put in the flight number it would give the booking time -- but it didnt recognise my flight number...Atrocious bad design, required fields which dont exist, and reliance on a search field (flight number) which could change, with new values possibly being added which are outside the control of the site operators. The Big Silly Tums down to Avis.co.uk and Avis.ie