He...
He travels by scooter.
They...
They travel by space shuttle.
They...
They travel by car.
She...
She travels by train.
He...
He travels by motorbike / motorcycle.
They...
They travel by ferry.
She...
She travels by bike / bicycle.
He...
He travels by canoe.
They...
They travel by van.
They...
They travel by hot air balloon.
They...
They travel by bus.