Which high-speed rail service launched the award-winning "Let's Go" advertising campaign that increased ridership by 27% and is credited with shifting consumer perception of train travel from 'outdated' to 'innovative'?

The transportation industry invests billions in marketing campaigns to build brand loyalty and attract customers. High-speed rail systems around the world compete not just with infrastructure but with compelling brand identities and innovative marketing strategies. This trivia question tests your knowledge about one of the most successful high-speed rail advertising campaigns that transformed public perception of train travel in the 21st century.

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Japan's Shinkansen (Bullet Train)
Eurostar's Channel Tunnel Service
China's CRH (China Railway High-speed)
Amtrak's Acela Express