之所以作出這樣的推測，原因並不是因為KERS的優勢，而是F1來年禁止季中測試的政策。
開發一項新技術需要大量測試，但禁止測試正正與之相違背。因此，各車隊定必會想盡辦法在其它地方對KERS進行測試。
先有法拉利，他們稱自已有兩套KERS方案，一是Magneti的系統，另一套則是自行開發的系統。而以FIAT和PSA最近的加強合作等活動，可推算第二套系統有很大程度會是源襲自PSA用於WRC和Le Mans的系統。而標緻和雪鐵龍在兩項賽事中使用KERS的數據，自然不過地會與法拉利車隊分享。
除此之外，法拉利還有A1GP。在法拉利贊助A1之初，我就有這樣的猜想，讓A1成為測試F1新技術的平台，可以避過不少近年FIA對試車的限制。即使最終不會讓KERS投入A1賽事，但配備KERS的A1「樣版車」在法拉利的測試賽道上出現相信也不過是時間問題。
其它車隊當然也有其辦法。單單雷諾就有WSR和GP2。豐田曾在日本S耐久投放過HVR混合動力裝置，更為簡單的KERS當然難不到他；要不然，Formula Nippon也是一個不錯的平台。Williams有新成立的Formula 2，假如本田有日要重返F1，先以Indy Car和LMP2作為試金石也是個不錯的做法。即是使寶馬，也還有寶馬方程式可以小試牛刀。
除此之外，獨立的KERS製造商本來就不止放眼在F1上，他們完全可以向其它賽事如超聯，Formula Master/GP3等單一車型方程式賽事，甚至是紐布靈24小時和美國的Speed World Challenge及Rolex Sports Car提供系統，而且除了標緻外的幾支勒芒車隊也有意使用KERS，因此可見KERS的商業潛力將會十分巨大，而當中很大程度是因為F1限制試車做成的。
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Ron Dennis在最近的"Q&A with Ron Dennis"，似乎走漏了口風，見：http://www.autosport.com/news/report.php/id/72704
當中關於KERS的內容如下：
Q. Some of your competitors have said they have got a handle on KERS, and other have said they haven't. Where do McLaren stand on this technology? Have you got to grips with it?
RD: We think we are very strong. We spent a lot of time analyzing which particular technology we would follow. In the end, we decided to follow an electro-mechanical system. So far, the work that has been done by Mercedes-Benz High Performance Engines and ourselves has gone very well. We have had very few real difficult parts of the programme. It is all extremely challenging, and it is cutting edge technology. There is nowhere you can buy this technology. You have to invent, develop, design and prove out everything, because whilst the principles of energy recovery are well known to everybody, actually the execution of it in high performance vehicles is virtually unknown. We think we are in a strong position but only time will tell. Certainly the first grand prix will give an indication, but as always in grand prix racing it will be two or three races before a pattern starts to emerge.
換言之，麥拿侖選用的極有可能是跟Williams相同的電傳動飛輪儲存裝置，這也能解釋在測試中沒有電池散熱的原因。
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