The latest photos from the British Columbia set of "The Flash" suggest the musical crossover with "Supergirl" may partly take place during the 1940s.

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Snapped on the streets of New Westminster, a city just southeast of Vancouver, the images reveal rows of 1940s-era automobiles, as well as actors Jesse L. Martin, Victor Garber and John Barrowman in period attire. According to Hollywood North.Buzz, the scenes were to involve car chases with gangsters, but no singing.

#TheFlash musical crossover filming car chase w/ gangsters & guns in #NewWest overnight tonight. No singing, I'm told. pic.twitter.com/KEdpm2w2mZ

— HollywoodNorth.buzz (@yvrshoots) February 11, 2017

Gangsters & guns - Jesse L. Martin/John Barrowman/Victor Garber.#TheFlash musical crossover https://t.co/fzwnr4dSSh pic.twitter.com/YtvFieejJ2

— HollywoodNorth.buzz (@yvrshoots) February 11, 2017

@yvrshoots #TheFlash is filming #newwestminster now pic.twitter.com/Y38Poget5m

— TREVOR (@Ufcvancouverbc) February 11, 2017

The photos offer a stark contrast to the ones that surfaced last weekend, which depicted guest star Darren Criss as Music Meister in a standoff in the present with Keiynan Lonsdale as Kid Flash, David Harewood as Martian Manhunter and Carlos Valdes as Vibe. The apparent shift to the 1920s very well may permit "The Flash" to give a nod to Music Meister's introduction on the animated "Batman: The Brave & The Bold," where he wore a zoot suit.

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Titled “Duet,” the crossover will kick off March 20 with a lead-in on “Supergirl,” similar to how the setup for last fall’s “Invasion!” was handled, and then continue on the March 21 episode of “The Flash.” The event will feature musical numbers by Criss, “The Flash” stars Grant Gustin, Martin and Valdes, “Supergirl” stars Melissa Benoist and Jeremy Jordan, “Legends of Tomorrow's” Garber and “Arrow” regular Barrowman.

Airing Mondays at 8 p.m. ET/PT on The CW, “Supergirl” stars Melissa Benoist, Mehcad Brooks, Chyler Leigh, Jeremy Jordan, David Harewood and Chris Wood. Airing Tuesdays at 8 p.m. ET/PT, “The Flash” stars Grant Gustin, Candice Patton, Danielle Panabaker, Carlos Valdes, Tom Cavanagh, Jesse L. Martin and Keiynan Lonsdale.

(via Heroic Hollywood)