This week on Dezeen, we revealed fashion house Prada's cafe inside Harrods department store, which features luxurious interiors dressed in a green hue that has become synonymous with the fashion brand.

Called Prada Caffè, the pop-up eatery is accessed through a mint-green latticed storefront and is located at the corner of Hans Road in London.

Its interior colour scheme was informed by Milan's iconic Pasticceria Marchesi and also nods to the green hue that Prada is known for.

In other fashion news, iconic British designer Mary Quant died on Thursday, aged 93. She is credited with popularising the mini skirt during the 1960s.

Also this week, Dezeen launched a podcast series on designing for the climate crisis and aired its first episode.

Dezeen's design and environment editor Jennifer Hahn will ask architects, designers and engineers about how they can harness their skills to work more sustainably.

In architecture news, Foster + Partners and engineering firm Arup revealed designs for a series of west-coast stations that will link "America's first high-speed rail segment" – the California High-Speed Rail, which is currently under development.

The four planned stations will be located in the cities of Merced, Fresno, Tulare and Bakersfield and serve as models for future stations.

Elsewhere, Dutch studio Wurck has designed an underwater bicycle park next to Amsterdam's central station with glossy white interiors.

Reportedly the first of its kind in the world, the park can house around 7,000 bikes.

Dezeen's features editor Nat Barker spoke to Philippe-Emmanuel Jean, head of concepts at car brand Peugeot, who said that city cars could become smaller thanks to advances in electrification technology in this exclusive interview.

According to Jean, swapping conventional internal combustion engines for chargeable batteries, which are reducing in size, will increasingly allow car manufacturers to produce spacious interiors in smaller vehicles.

In other design news, Benjamin Hubert's studio Layer and US start-up Croft have designed prototypes for a system of products for retrofitting vehicles to run on green hydrogen.

Called Nanoplant and Nanocartridges, the prototypes enable users to create their own solid-state hydrogen to power cars as well as other heavy-duty vehicles like trucks.

Popular projects on Dezeen this week include a corrugated metal accessory dwelling unit in Texas, an iron-clad house in Porto and a Byron Bay diner with muted interiors.

Our latest lookbooks collected living spaces with Crittal-style windows and earthy kitchens with terracotta tiles.

This week on Dezeen

This week on Dezeen is our regular roundup of the week's top news stories. Subscribe to our newsletters to be sure you don't miss anything.