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Many people (this AC included) are holding off on a BEV purchase until charging (on long trips) is about as fast/convenient as a gasoline fill up. Mercedes-AMG appear to have shown this capability in a convincing way, as described here, https://www.pmw-magazine.com/news/engine-technology/f1-inspired-concept-amg-shatters-records-and-drives-around-the-world-in-eight-days.html [pmw-magazine.com] and also here, https://www.motortrend.com/news/mercedes-amg-gt-xx-concept-ev-records-nardo [motortrend.com]

From the first link,

Mercedes-AMG has demonstrated the performance of the Concept AMG GT XX [a fastback sedan shaped car] under long-distance, extreme conditions, breaking a total of 25 long-distance records. The Concept AMG is powered by AMG.EA architecture drivetrain technology, set to enter production next year.

Among the records smashed [on 12 km long high speed test track at Nardo] was a record for the greatest distance covered by an electric vehicle in 24 hours. The technology platform traveled 5,479km (3,404 miles), surpassing the previous sub-4,000km (2,485 miles) record by 1,518km (943 miles) – a 38% increase.

The tests also included AMG’s ‘drive around the world in eight days.’ Drivers maintained a constant speed of 300km/h (186mph), stopping only to recharge at power levels averaging around 850kW. After each charging stop, the vehicle accelerated back to 300km/h (186mph) for eight consecutive days. According to analyses, the 300km/h (186mph) speed offered the optimal balance between track speed and charging stops, delivering the fastest overall time.
[...]
The concept vehicle produced over 1,000kW (>1,341hp) using three motors in high-performance drive units. Two axial flux motors on the rear axle operated continuously, while a front booster motor activated as needed for extra power or traction.

The high-performance battery is a new development from Affalterbach, inspired by Formula 1. It uses newly developed cylindrical NCMA cells, which offer efficient cooling and an energy density of over 300Wh/kg [according to one web source, gasoline is 13000 Wh/kg].

The battery cells were directly cooled by an electrically non-conductive oil, regulating the temperature of over 3,000 cells for even heat dissipation. This supported the battery’s high continuous power. Operating at over 800V reduced the weight with lighter cables and shortened charging times, while thermal management ensured optimal cell temperature for maximum performance under extreme conditions. The AMG charges at over 850kW across much of the charging curve. In five minutes, it can add about 400km [~250 miles] of range (WLTP).

Looks like at least some cars will be ready long before the US infrastructure--only recently have I read about anyone proposing megawatt charging stations.

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