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Grace shows off three incredible machines that are all powered by electricity.

Grace shows off three amazing machines that all made for emergencies.

Grace shows off three amazing machines that have pedals.

Grace shows off three amazing machines that can all fly.

Grace shows off three amazing machines that all go off-road.

Grace shows off three amazing machines that can go on water.

Grace shows off three amazing machines that all belong on the farm.

Grace shows off three amazing machines that you have to stand-up on!

Grace shows off three amazing machines that are really little!

Grace shows off three amazing machines that all race!

Grace shows off three amazing machines that all belong in the swamp!

Grace shows off three amazing machines that all work in airports.

Grace shows off three amazing machines that all move in really cool ways.

Grace shows off three amazing machines that all help build things.

Grace shows off three amazing machines that are all like animals.

Grace shows off three amazing machines that all belong on the beach.

Grace shows off three amazing machines that are all kinds of transport!

Grace shows off three amazing machines that are all motorbikes!

Grace looks back at her favourite machines from the series.