https://www.as-web.jp/f1/676249?all
Yamamoto's interview:
·As it was Honda's last year in Formula 1,so HRD Sakura changed the plan and worked very hard to bring the “new skeleton Power Unit” for 2021 season(it was original planned for 2022 due to the COVID-19).We want to catch up with and even overtake Mercedes with the new Power Unit,we were working hard for both Power-up and reliability.
·Of course maybe Mercedes will improves more than Honda expected,just like last year .But we also had learned from last year's lesson,the new PU produces(a good level of)power to fight in Honda's last season.The reliability part is not 100% yet,but in Sakura,Asagi Yasuaki(Honda F1 PU development general manager) and the engineers was working very hard and doing everything they can for the Bahrain test and of course the first race.
·To improve the efficiency of the combustion chamber and aim for more power, we changed the way about designing and making crankcases and cylinders. Simply say, except for the already mature MGU-K, we reviewed and remade everything including materials.Thats why we called the PU“new skleton PU”.
·I am very happy about the good relationship between Honda and Red Bull.We didnt pay any money for the Honda logo.Last summer,I told Horner and Tost"if you guys cant find new title sponsor,then how about put the Honda Logo in the rear wing next year?"Then they didnt sign new title sponsor as we know,and now we can see Honda logo in both 4 cars.