This was fact-checked to be false: source 1 in English, source 2 in Spanish.

1. she wasn't onboard the government jet (also, wasn't even a private jet)
2. she was there a day before to attend a different event
3. she traveled there by a hybrid
4. the rest of her team travelled by bullet train
5. she wasn't allowed on the bullet train for security reasons (though I can't quite see how a car is safer, lol)
6. she has been photographed biking around the city in the day before the climate conferene
7. the person who made the original tweet this article is based on deleted it ~~and acknowledged having made this up~~

Is the only source for the jet part the tweet from the guy with "I will not submit. I will not comply." as his bio?

the bicycle? powered by coal.

Remember when Speaker of the House Dennis Hastert drove an electric car to leave a press conference about fossil fuels? Then was photographed a half block away ditching it for a full size SUV? Then was arrested for financial crimes involving unreported payments to a young man who Hastert? Then it was revealed that Hastert was paying the young man hush money? Then Hastert pled guilty to felonies because the hush money was to cover up Hastert’s molestation of multiple young boys when Hastert was their wrestling coach?

[citation needed]

Forcing the security team to ride bicycles would probably not be covered by the contract.

It would be pretty cool to see a pack of cyclists in suits with guns, though.

Yeah... Rat em out.