synthetic material c). The price will eventually go down The writer succeeds in convincing the reader step by step, of his conclusion--it is both impossible and impracticable to make atomic cars. For even if the problem of penetration of radiation and of economy are solved, the problem of safety still remains unsolvedsynthetic material. ◼ c). The price will eventually go down. The writer succeeds in convincing the reader step by step, of his conclusion--it is both impossible and impracticable to make atomic cars. For even if the problem of penetration of radiation and of economy are solved, the problem of safety still remains unsolved