RJD chief Lalu Prasad Yadav on Friday said he will unleash 1,000 horse carts, called 'Tum-Tum', across Bihar to take on the BJP's high-tech 'raths' ahead of assembly elections."I will flag off 1,000 Tum-Tums for campaigning to reach out to the poorest of the poor to counter the BJP raths," the former chief minister said here."We don't have funding from the rich. So the RJD has decided to use horse power to defeat the BJP's machine power," he said, referring to the 'raths'."Dozens of Tum-Tums will be engaged by our party for campaigning in each constituency." Elections to the 243-seat Bihar assembly will take place later this year.The Rashtriya Janata Dal leader said the horse carts were perfect for Bihar's "dusty and rough roads. Tum-Tums will help us save money on petrol and diesel".BJP president Amit Shah on Thursday launched the party's high-tech 'Parivartan Rath' campaign for the polls by flagging off 160 GPS-fitted 'raths' here.The 'raths' would show a video film in Hindi depicting the 15 years of "misrule" of Bihar by Lalu Prasad and his wife Rabri Devi.