https://www.youtube.com/watch?v=ofpozePl1cc

See the examples midway through this video.

Note the two pantographs!

Length is 56 metres for the CAF version

https://welovebudapest.com/budapest.and.hungary/budapest.now.has.the.world.s.longest.tram

(note also the grass track)

Length is 53.99 metres for the Siemens version

https://www.mobility.siemens.com/mobility/global/SiteCollectionDocuments/en/rail-solutions/trams-and-light-rail/combino-plus-budapest-en.pdf

These cars are multi-section, 100% low floor with no internal steps.

Designed for operation with a high passenger volume of about 10,000 persons per hour and per direction.

Budapest Transport Ltd. operates the trams in peak hours at two minute intervals. To ensure quick and convenient passenger flows eight double-leaf doors on each side with a clear width of 1,300 mm and spread over the whole length of the tramcar.