We booked a minivan and ended up with a minibus instead. We were delayed by 30 minutes leaving Sihanoukville. In the first 90 minutes we only drove 33 km. Air conditioning was faulty. No leg space. Arrived in Phnom Penh 2 hours later than expected.
The bus departed earlier then my ticket said. The driver shouted at us in Khmer for being late (we caught up in tuk tuk). Driver pulled over 5 times to vomit, he was a very ill man, poor guy. Stopped several times for passenger to do shopping. 6 hours.