Riversimple presents the Rasa, its ticket towards production – UPDATE

Riversimple has presented its second prototype. And it bears a proper name, instead of only Mk1. It is called Rasa, for Tabula Rasa, or blank sheet of paper. This is how the car has been created, from scratch. But it features a lot of innovations that have a fairly good background. And which make the Rasa a mere detail in all Riversimple is proposing.

We have got in touch with Riversimple in order to obtain more information about the car. While we wait for their answer, we can tell you what has already been released about the car. The Rasa was developed as the Alpha Build, before receiving its final name.


It weighs 520 kg and, with 1.5 kg of hydrogen, it has a range of 483 km, or 300 miles. If you were to compare it to an internal combustion engine, its fuel efficiency would be close to 1.13 l/100 km. But it does not consume a single drop of petrol, only the energy that its small 8.5 kW fuel cell can extract from hydrogen. And this is massive, but we will go a little deeper into this in a future article about Riversimple and Rasa. Don’t miss it!


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Rasa’s cruise speed is 89 km/h, but it could reach close to 100 km/h in tests. Acceleration is aided by 120 lithium capacitors placed in front of the car. It is recharged by regenerative braking and also by the exceeding energy produced by the fuel cell. Riversimple calls its vehicles with this arrangement “network electric cars”, something else that we will explain in detail in a future post.


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The car’s structure is made of carbon fiber, produced by KS Composites, and it weighs only 39.6 kg. Rasa’s seats structure is also light. Trimmed with a recycled PET fabric, they only weigh, trim included, 10.8 kg each.


Each wheel has its own electric engine. The XR32-11 is produced by Printed Motor Works and it delivers 160 Nm of torque, as well as 23.1 kW of peak power. Multiply these numbers by 4 and you will have a 520 kg two-seater car with 640 Nm of torque and 92.4 kW. Tires come from Michelin and are ultra low rolling resistant.


Riversimple informs it can accelerate from 0 to 89 km/h in 9 s, but this has been the setup the company has chosen to give it in order for the car to be more fuel efficient yet fun. With such a huge torque and adequate power, it could be incredibly faster than this. And it could sell a lot, if the car was to be put for sale. This is not what Riversimple aims to do and we have explained it in our first text about Rasa, when it was about to be presented.

This, as we have mentioned, is just the presentation text. Many have spoken about this car and we have read unbelievably crappy stuff about Rasa. Some have even asked for a refund for the US$ 3 million spent on research, as if it was a mindblowing amount of money for the automotive industry. That sort of uninformed and plain stupid text should only show eventual readers that the guys who write such rubbish would better do something else for a living. But we will get back to this in the future text we have promised. It won’t take long, bet on that!



Check this text about Riversimple and Rasa, with plenty of information about the car and the company proposition.


Gustavo Henrique Ruffo

I have been an automotive journalist since 1998 and have worked for many important Brazilian newspapers and magazines, such as the local edition of Car and Driver and Quatro Rodas, Brazilian's biggest car magazine. I have also worked for foreign websites, such as World Car Fans and won a few journalism prizes, among them three SAE Journalism Awards and the 2017 IAM RoadSmart Safety Award. I am the author of "The Traffic Cholesterol", a book about bad drivers that you can buy at Hotmart, Google Play, Amazon and Kobo.

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