"I can't tell you now, but I have a plan for making Tom sorry he ever did anything to you, and I will also pay back some old scores to Mr. Swift and Mr. Damon. I'll ruin their bank for them, that's what I'll do." "Ruin their bank, pop? How?" "You wait and see. The Swift crowd will get off their high horse soon, or I'm mistaken. My plans are nearly completed, but I can't tell you about them. I'll ruin Mr. Swift, though, that's what I'll do," and Mr. Foger shook his head determinedly. Tom was soon at his home, and Mrs. Baggert, hearing the noise of his machine, as it entered the front yard, came to the side door. "Where's my blacking?" she asked, as our hero dismounted and untied the bundle of steel tubes he had purchased. "I--I used it," he answered, laughing. "Tom Swift! You don't mean to say you took my stove polish to use in your battery, do you?" "No, I used it to polish off Andy Foger and some of his cronies," and the young inventor told, with much gusto, what had happened. Mrs. Baggert could not help joining in the laugh, and when Tom offered to ride back and purchase some more of the polish for her, she said it did not matter, as she could wait until the next day. The lad was soon busy in his machine shop, making several larger cells for the new storage battery. He wanted to give it a more severe test. He worked for several days on this, and when he had one unit of cells complete, he attached the motor for an efficiency trial. "We'll see how many miles that will make," he remarked to his father. "Have you thought anything of the type of car you are going to build?" asked the aged inventor of his son. "Yes, somewhat. It will be almost of the regulation style, but with two removable seats at the rear, with curtains for protection, and a place in front for two persons. This can also be protected with curtains when desired." "But what about the motors and the battery?" "They will be located under the middle of the car. There will be one set of batteries there, together with the motor, and another set of batteries will be placed under the removable seats in what I call the tonneau, though, of course, it isn't really that. A smaller set will also be placed forward, and there will be ample room for carrying tools and such things." "About how far do you expect your car will go with one charging of the battery?" "Well, if I can make it do three hundred miles I'll be satisfied, but I'm going to try for four hundred." "What will you do when your battery runs out?" "Recharge it." "Suppose you're not near a charging station?"