If you’ve spent any time in Spain, you’ll have noticed the hordes of small-capacity bikes and scooters that swarm the streets. Ridden with verve—and in some cases, abandon—they’re a noisy affirmation of the Iberian love affair with motorcycles. In the western world, most custom motorcycles are bought (or built) by older riders—those who are accustomed to larger bikes, and have the bank accounts to match. But in Spain, cash is in short supply: the unemployment rate is an astounding 27%. So…
