Wallace & Gromit's World of Invention - Season 1 - Eps 6: From A To B
In this episode of the science series, Wallace and Gromit explore incredible transportation inventions from around the globe. In the 'Contraption Countdown' the focus is on peculiar transport devices, and the duo find out how to cross the River Thames in a plastic bag. They discover the intention behind laser propulsion in the creation of flying saucer technology, and meet Cedric Lynch, an illustrious engineer who invented electric tricycles.
About Wallace & Gromit's World of Invention

Title: Wallace & Gromit's World of Invention
First Air Date: 2010-11-03
Last Air Date: 2010-12-08
Status: Ended
Rating: 6.476/10 (from 21 votes)
Language: EN
Seasons: 2
Total Episodes: 6
Network: BBC One
Genres: Animation, Documentary, Comedy
Production Companies: Aardman
Synopsis
In the series, "Wallace will take a light hearted and humorous look at the real-life inventors, contraptions, gadgets and inventions, with the silent help of Gromit. The series aims to inspire a whole new generation of innovative minds by showing them real, but mind-boggling, machines and inventions from around the world that have influenced his illustrious inventing career" (the BBC press statement). Peter Sallis reprised his role as the voice of Wallace. The filmed inserts are mostly narrated by Ashley Jensen, with one in each episode presented in-vision by Jem Stansfield. John Sparkes also voices a portion in the unseen character of archivist Goronwy.
Cast

Peter Sallis
Wallace (voice)

Ashley Jensen
Herself - Narrator

John Sparkes
Goronwy (voice)

Jem Stansfield
Himself - Science Correspondent