I N T E R V I E W

Moving Forward Beyond Hardship: Unwavering Determination Taught by the Race

Sonnenwagen Aachen

Sonnenwagen Aachen

Solar car name
Covestro Æthon
Dimension
5.8 m x 1.5 m x 0.98 m
Weight
199 kg
Appealing point
The drivers position at the front so that the canopy doesnt throw as much shade on the solar cells. Two types of solar cells are used to optimise string connection and minimise losses from shadows.
Team Member

Review BWSC 2025 - How do you feel when looking back on this year's race?

Beforehand it was very uncertain as it was in August for the first time. The first day of the race was very hectic for the team as we had a problem early on and did a lot of overtaking. Then we got into a rythm but the higher dependancy on weather conditions because of the new regulations made every decision even more impactful. That added a very exciting factor and seeing how close the race was between the three teams in front of us was also very fascinating.

What are the unique characteristics of your team?

We have 44 team members and every single one goes to Australia for the race. That leads to challenges in organising the team at some times but leads to everyone beeing extremely motivated during the whole season with the big goal in mind.

What are the key features of your car for BWSC 2025?
Also, please share the biggest challenge you faced during the development process and how you overcame it.

See appealing points on solar car page. The biggest challenge was manufacturing it faster than we ever had done before because of the tightened schedule. Good preparation and rigorous planning and execution of the plan combined with fast adaptations helped us realise our goal.

How important are tires for a solar car? And what do you think about BS ENLITEN tyre?
Is there any tyre performance you would expect for 2027?

The tyres are crucial for a race, where efficiency is of such high importance. Sometimes we did tests on conventional motorcycle tyres to not wear down our race tyres and the difference to the BS ENLITEN were night and day. The low rolling resistance of the BS ENLITEN saves us a lot of energy and we would have to drive much slower with our available energy if we would have used other tyres.

Bridgestone is promoting sustainability across the entire value chain—from raw material procurement to product use and recycling.
What kind of initiatives does your team take to reduce environmental impact and promote sustainability in vehicle development and team operations?

On the carbon side we use expired prepreg from manufacturers, which they would dump otherwise. We also are actively looking into how we can incorporate more natural fibres into our car. In general we always try to incorporate as many materials from our main sponsor Covestro as possible. Their materials are conceived to incorporate as much circular economy as possible.

BWSC is a symbolic race that embodies sustainable motorsports.
How do you think your experience and challenges in BWSC will contribute to the future of mobility?

It definitely shows how important efficiency is to minimise energy consumption. Obviously you want to get to get your energy from sustainable sources but the race shows even more what is possible with liitle energy amounts.

Please share your goals and aspirations for BWSC 2027.

The goal is to finally beat the top three teams that have been the elite of this race for quite some years now. In terms of safety Covestro Aethon is our benchmark that our new car will improve upon.

Message to the future teammates aspiring to compete BWSC 2027

Always keep your head high. Tough moments will be inevitable but how one reacts to them is the most important. Every challenge can be overcome with good cooperation and enough determination.