Five-section low-floot tram with bogies for $4 million
  David McLoughlin

This article is about Stadler TINA (Total Integrierter Niederflur-Antrieb)
trams for Darmstadt. They have also been bought by such places as Halle and
Basel. They are 100 pc low-floor and appear to have swivelling bogies.

Though the ones in this article are uni-directional, the model can come in
any gauge and presumably with a bidirectional option.

The Darmstadt ones are costing about $AUS 4 million each.