The par method is a member of the Parallelizable trait.
val donutFlavours: Seq[String] = Seq("Plain", "Strawberry", "Glazed")
// Convert the Immutable donut flavours Sequence into Parallel Collection
import scala.collection.parallel.ParSeq
val donutFlavoursParallel: ParSeq[String] = donutFlavours.par
val donuts: ParSeq[String] = donutFlavoursParallel.map(d => s"$d donut")