In this report, we applied our established method (Wang et al., 2024) to explore the connections between ICEs and EVs. While ICEs and EVs are often regarded as alternatives for transportation needs and show observational relatedness, the extent of their underlying technological relatedness remains unclear. We provide a conceptual framework that breaks down the two technologies into components based on functions and allow for easier comparison. We also identify corresponding patent classification codes for each component. We summarize which components of EVs demonstrate strong continuity with ICEs and which represent innovations that depart from automotive heritage. The report highlights the methodological challenges in analyzing technological relatedness between these domains, particularly due to the complex taxonomies and the difficulty of identifying matching technological components.