CATAN
After playing Swift Journey, can you pay grain again to extend the wagon?
One publisher-affiliated reply says yes, but the current rulebook's once-per-turn wheat wording leaves it open.
- RedPiranha · Community · 2016-01-04
An official FAQ editor answered yes: Swift Journey gives an additional move, and each move can be extended with wheat. The current rulebook says only that the wheat boost is usable once per turn, so a table that reads that limit strictly may allow just one boost.