第1章：全场免费，统统免费！

It’s all free, everything is free!

[Mechanic Girl Modification] + [Racing Competition] + [Novel Theme] + [Old Taste] + [Sweet Cultivation~] This book is also known as "Who Says Top Modifiers Can't Be Top Drivers?" My name is Su Chen, the chief racing car modifier in China. I encountered a semi-trailer with all risks on the road, but I couldn't defeat it with all my strength, so I got the time travel package. This is a world where racing is supreme. There is a kind of girl called mechanized girl who can transform into a racing car and race on the track. I thought that I could make a living in this world and achieve the freedom of picking up girls by opening a modification shop with the modification skills of my previous life. As a result, because I didn't have a modification certificate, the modification shop was on the verge of bankruptcy. In order to overcome the difficulties and activate the system. I made a decision that went against my ancestors - giving it away for free. ——————————————— My name is Xingmeng. I am a mechanized girl who is disliked by female drivers because of poor performance. In order to help the driver pass the graduation assessment, I had to seek modification and upgrades everywhere. But because I didn't have much money, I was rejected by all modification shops. Until I saw the sign of this modification shop - free modification. It's just that this boss is a bit strange. The modification room he took me to didn't seem to be a proper modification room. If I was not mistaken, it seemed to be... a training room?
Protagonists: Su Chen, Xing Meng

【机娘改装】+【赛车竞技】+【题材新颖】+【老味道】+【甜蜜养成~】 本书又名《谁说顶级改装师不能是顶级车手？》 我叫苏辰，华夏首席赛车改装师。 路遇全险半挂，拼尽全力无法战胜，喜提穿越套餐。 这是一个赛车至上的世界，有种名为机娘的少女能够幻化成赛车的模样驰骋赛道。 本以为凭借上一世的改装技术开个改装店能在这个世界混得风生水起，实现把妹自由。 结果因为没有改装师证，改装店濒临倒闭。 为了渡过难关，激活系统。 我做出了一个违背祖宗的决定——白给。 ——————————————— 我叫星梦。 因为性能差被女驾驶员嫌弃的机娘一枚。 为了帮助驾驶员通过毕业考核，我不得不四处寻求改装升级。 但由于没什么钱，被所有改装店拒之门外。 直到看到这家改装店的牌子——免费改装。 只是，这个老板有点奇怪。 他带我去的改装室似乎不是正经改装室。 如果没看错的话，好像是…教导培训室？ 主角：苏辰,星梦