Bus rides are super exciting for kids!!! But that being said, I would sooner take the kids in my vehicle if it was just a question of liability and risk. In my care, I know the service history, the condition of my brakes and tires and the kids are in car seats. On a public bus, the servicing is sketchy at best given that the ministry allows public transit to be exempt from many of the laws car and truck users are subjected too. And then there is the fact that there are no seatbelts either!!! If this is about what is safer, a vehicle with car seats wins out tenfold, but if it's just a question of getting from A to B and what's most fun, the bus is such a fun time for little ones.